Remove an SXM GPU

Follow instructions in this section to remove a GPU.

About this task

Attention

When the HGX A100 80GB 500W 4-GPU Board is installed and if the ambient temperature is above 30°C, the GPUs may be instructed by the system to enter an emergency power reduction state whereby GPU performance will be impacted.

Important

Removing and installing this component requires trained technicians. Do not attempt to remove or install it without proper training.

Note

Make sure you have an alcohol cleaning pad available.

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

• If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover, or remove the server from the rack. See Remove the server from rack.

• A torque screwdriver is available for request if you do not have one at hand.

Prepare the following screwdrivers to ensure you can install and remove the corresponding screws properly

Table 1. Torque screwdriver type list

Torque screwdriver type list	Screw type
PH 2 head screwdriver	Philips #2
Torx 10 screwdriver	Torx T10 screw

The following illustration shows the GPU numbering.

Figure 1. SXM GPU Numbering

Procedure

1. Prepare your server.
   1. Remove the top cover. See Remove the top cover.
   2. Remove the 2.5-inch drive assembly. See Remove the 2.5-inch drive cage assembly.
   3. Remove the network adapters. See Remove a network adapter.
   4. Remove the front I/O expansion board module. See Remove the front I/O expansion board module.
   5. Remove the retimer assembly. See Remove the retimer assembly.
   6. Remove the Lenovo Neptune^® liquid-to-air (L2A) hybrid cooling module. See Remove the Lenovo Neptune(TM) liquid-to-air (L2A) hybrid cooling module.
   7. Remove the SXM GPU board. See Remove the SXM GPU board.
2. If there is any old thermal grease on the four GPUs and the cold plates, gently clean the top of the four GPUs and the cold plates with an alcohol cleaning pad.
3. Locate the GPU to be removed. Unfasten the four Philips #2 screws on the GPU, and carefully remove the GPU out of the GPU board.
   Attention

   Tighten and remove the screws with a torque screwdriver sets to the proper torque. For reference, the torque required for the screws to fully tighten/removal is 0.5±0.05 newton-meter, 4.5±0.5 pound-inch.

   Figure 2. Removing a GPU from the SXM GPU board
   
   
4. Install protective covers to the SXM GPU board.
   Figure 3. Installing the protective covers